Generally speaking, michigan soils developed from which geological source?

The appropriate response is glacial deposits.  Glaciers are sufficiently intense to convey modest and immense shake flotsam and jetsam, and when they drop it, the ice drops it unpredictably. Consequently, the material saved by ice is unsorted or blended in an estimate. 

At the point when the ice liquefies, the blend of unsorted silt stores conveyed by the icy mass, referred to by and large as frigid till, is dropped, or kept. These silt regularly get framed into heaps known as moraines, which we can characterize as heaps of till stored along with the edges of past icy masses.